EcoFlow DELTA Pro 3 vs Growatt INFINITY 1500
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
Growatt INFINITY 1500 costs $2600 less. Whether that gap is worth closing depends on what you need to run.
- EcoFlow DELTA Pro 3 holds 171% more energy (4096Wh vs 1512Wh), so it runs the same load proportionally longer.
- EcoFlow DELTA Pro 3 has 5000W more surge headroom (8000W vs 3000W) — that decides whether a fridge, pump or AC compressor will actually start.
- Growatt INFINITY 1500 is 75.5 lb lighter (37.5 lb vs 113 lb).
- EcoFlow DELTA Pro 3 is rated for 4,000 cycles vs 3,000 — meaningful if you cycle it daily.
EcoFlow DELTA Pro 3
The most complete large unit here. 4096Wh, 4000W, 8000W surge and 2600W of solar — it does everything the F3800 does with less weight.
Best for: Whole-home backup buyers who want maximum solar recharge speed.
Where it falls short:
- $3,699 is a serious investment
- Overkill unless you're backing up a whole home
Growatt INFINITY 1500
A capable mid-size that flies under the radar. Solid 2,000W output and fast charging, let down mainly by a shorter warranty than the big brands.
Best for: Value hunters who want 1.5kWh and don't need the longest warranty.
Where it falls short:
- 3,000W surge is modest for the output
- 3-year warranty vs 5 from the majors
| Spec | EcoFlow DELTA Pro 3 | Growatt INFINITY 1500 |
|---|---|---|
| Price | $3699 | $1099 |
| Capacity | 4096 Wh | 1512 Wh |
| Continuous output | 4000 W | 2000 W |
| Surge output | 8000 W | 3000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 4,000 | 3,000 |
| Weight (lighter wins) | 113 lb | 37.5 lb |
| Max solar | 2600 W | 800 W |
| Recharge time (faster wins) | 1h 40m | 1h 50m |
Runtime head-to-head
| Appliance | EcoFlow DELTA Pro 3 | Growatt INFINITY 1500 |
|---|---|---|
| Refrigerator | 58.0 hrs | 21.4 hrs |
| Mini fridge | 110.5 hrs | 40.8 hrs |
| Chest freezer | 43.5 hrs | 16.1 hrs |
| CPAP machine | 87.0 hrs | 32.1 hrs |
| Sump pump | 4.4 hrs | ❌ |